From owner-freebsd-amd64@FreeBSD.ORG Sun Mar 28 00:38:35 2004 Return-Path: Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 25FD316A4CE for ; Sun, 28 Mar 2004 00:38:35 -0800 (PST) Received: from smartmx-06.inode.at (smartmx-06.inode.at [213.229.60.38]) by mx1.FreeBSD.org (Postfix) with ESMTP id E052043D45 for ; Sun, 28 Mar 2004 00:38:32 -0800 (PST) (envelope-from markus@schanovsky.at) Received: from [81.223.211.129] (port=15529 helo=xenos-xp.schanovsky.at) by smartmx-06.inode.at with esmtp (Exim 4.30) id 1B7VoN-0007YW-MC for freebsd-amd64@freebsd.org; Sun, 28 Mar 2004 10:38:31 +0200 Message-Id: <6.0.0.22.2.20040328102132.028191f8@mail.schanovsky.at> X-Sender: markus#schanovsky.at@mail.schanovsky.at (Unverified) X-Mailer: QUALCOMM Windows Eudora Version 6.0.0.22 Date: Sun, 28 Mar 2004 10:32:03 +0200 To: freebsd-amd64@freebsd.org From: Markus Schanovsky Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Content-Filtered-By: Mailman/MimeDel 2.1.1 Subject: WARNING: WRITE_DMA UDMA IRCR error X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 28 Mar 2004 08:38:35 -0000 Hello! I have a new am464-Box running FreeBSD 5.2.1 with a serial ATA-Disk of 160 GB. From the beginning I encountered errors like : Mar 26 09:02:04 free kernel: ad4: WARNING - WRITE_DMA UDMA ICRC error (retrying request) LBA=118 166239 Mar 26 09:02:25 free kernel: ad4: WARNING - WRITE_DMA UDMA ICRC error (retrying request) LBA=118 169055 ................ There was no other problem, not loss of data - the machine seems very fast, compiling of ports was quick and successfull. I tried to use a small serial-ata-disk - with the same errors. Is it a serious problem running FreBSd with this errors? may some data be lost sometime in the future? Now I solved the problem with sysctl hw.ata.ata_dma = 0 in my /boot/loader.conf - there are no write errors further. But what's the disadvantage of turning ata_dma off? Speed? Please give me some hints! With best regards Mark ---------- Markus Schanovsky Paedagogisches Institut der Stadt Wien EDV-Administrator Burggasse 14-16/214 Tel: +43-1/523 62 22/99 222 A-1070 Vienna Fax: +43-1/523 62 22/99 93 200 Austria email: m.schanovsky@m56ssr.wien.at priv: markus@schanovsky.at Website: http://www.pi-wien.at